"With time, the fake bottom had detached from the cup, so it was clearly visible that inside there was a bundle and you could see a fragment of the chain and a ring," he added.

A woman's gold ring recovered from the mug.

About 1.5 million people, most of them Jews, were killed in concentrations camps at Auschwitz-Birkenau in occupied Poland between 1940 and 1945.

Their belongings were seized by Nazi soldiers, many of which are on display today.

The necklace was wrapped in a canvas cloth.

Many victims used to hide their valuables inside items that the museum says are still being discovered years later. However, their owners often remain anonymous because of the lack of traces on the objects to identify them.

This is how the jewellery remained hidden for so many years.

The museum, which says it has more than 12,000 enamelled kitchen items like cups, pots, bowls, kettles, jugs--in its memorials collection--said the jewellery would now be stored "in the form reflecting the manner in which it had been hidden by the owner".

Pictures courtesy: Reuters

(With inputs from Reuters)

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